<template>
    <div class="app-container">
        <div class="filter-container">
            <el-input
                v-model="listQuery.search"
                placeholder="请输入管理员账户/邮箱"
                style="width: 200px;"
                class="filter-item"
                @keyup.enter.native="handleFilter"
            />
            <el-select v-model="listQuery.is_check" placeholder="请选择启用状态" clearable class="filter-item">
                <el-option
                    v-for="item in calendarCheckOptions"
                    :key="item.key"
                    :checked="item.key == listQuery.is_check"
                    :label="item.display_name+'('+item.key+')'"
                    :value="item.key"
                />
            </el-select>
            <el-button v-waves class="filter-item" type="primary" icon="el-icon-search" @click="handleFilter">
                {{ $t('table.search') }}
            </el-button>
            <el-button v-if="permission.delete.status" v-waves class="filter-item" type="danger" icon="el-icon-delete" @click="handleDelete">
                {{ $t('table.batchDelete') }}
            </el-button>
            <el-button
                v-if="permission.create.status"
                class="filter-item"
                style="margin-left: 10px;"
                type="primary"
                icon="el-icon-plus"
                @click="handleEdit"
            >
                {{ $t('table.add') }}
            </el-button>
        </div>

        <el-table
            v-loading="listLoading"
            :data="list"
            :element-loading-text="elementLoadingText"
            @selection-change="setSelectRows"
            border
            class="margin-buttom-10"
        >
            <el-table-column show-overflow-tooltip type="selection"/>
            <el-table-column
                show-overflow-tooltip
                prop="role_id"
                label="Id"
                align="center"
            />
            <el-table-column
                show-overflow-tooltip
                prop="role_name"
                label="角色名称"
                align="center"
            />
            <el-table-column label="创建时间" show-overflow-tooltip align="center">
                <template slot-scope="{ row }">
                    {{ row.created_time | parseTime("{y}-{m}-{d} {h}:{i}") }}
                </template>
            </el-table-column>
            <el-table-column align="center" prop="is_check" label="启用状态">
                <template slot-scope="{row}">
                    <el-tag :type="row.is_check | statusFilter">
                        <i :class="row.is_check == 1 ? 'el-icon-unlock' : 'el-icon-lock'" />
                        {{ row.is_check | checkFilter }}
                    </el-tag>
                </template>
            </el-table-column>
            <el-table-column
                fixed="right"
                label="操作"
                align="center"
            >
                <template v-slot="{row}">
                    <!-- 状态变更 -->
                    <el-button v-if="permission.change_filed.status && row.role_id > 1 && row.is_check == 0" type="text"
                               @click="changeStatus(row, 1)">
                        <el-tag :type="1 | statusFilter">
                            <i class="el-icon-unlock" />
                            启用
                        </el-tag>
                    </el-button>
                    <el-button v-else-if="permission.change_filed.status && row.role_id > 1 && row.is_check == 1" type="text"
                               @click="changeStatus(row, 0)">
                        <el-tag :type="0 | statusFilter">
                            <i class="el-icon-lock" />
                            禁用
                        </el-tag>
                    </el-button>
                    <!-- 编辑与删除 -->
                    <el-button v-if="permission.update.status" type="text" icon="el-icon-edit" @click="handleEdit(row)">编辑</el-button>
                    <el-button v-if="permission.delete.status && row.role_id > 1" type="text" icon="el-icon-delete" @click="handleDelete(row)">删除</el-button>
                </template>
            </el-table-column>
        </el-table>
        <!-- 分页 -->
        <el-pagination
            background
            :current-page="listQuery.page"
            :page-size="listQuery.limit"
            :layout="layout"
            :total="total"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
        />


        <!-- 详情 -->
        <el-dialog :visible.sync="dialogVisible" :title="dialogType === 'edit' ? '编辑角色' : '新增角色'">
            <el-form ref="role" :model="role" label-width="80px">
                <el-form-item label="角色名称">
                    <el-input v-model="role.role_name"
                              :autosize="{ minRows: 2, maxRows: 20}"
                              placeholder="角色名称"/>
                </el-form-item>
                <el-form-item label="备注">
                    <el-input
                        v-model="role.role_remarks"
                        :autosize="{ minRows: 2, maxRows: 100}"
                        type="textarea"
                        placeholder="备注"/>
                </el-form-item>
                <el-form-item label="是否启用" prop="is_check">
                    <el-radio-group v-model="role.is_check">
                        <el-radio :label="0" :checked="role.is_check == 0 ? 'checked' : ''">禁用</el-radio>
                        <el-radio :label="1" :checked="role.is_check == 1 ? 'checked' : ''">启用</el-radio>
                    </el-radio-group>
                </el-form-item>
                <el-form-item label="菜单权限">
                    <el-tree ref="tree" :check-strictly="checkStrictly" :data="menusData" :props="defaultProps"
                             show-checkbox node-key="menu_id"
                             class="permission-tree"/>
                </el-form-item>
            </el-form>
            <div style="text-align:right;">
                <el-button type="danger" @click="dialogVisible = false">{{ $t('permission.cancel') }}</el-button>
                <el-button v-if="permission.update.status" type="primary" @click="confirmRole">{{ $t('permission.confirm') }}</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
import { checkButtonPermission } from '@/utils/permission';
import {getListRole, createRole, updateRole, delRole, changeFiledStatus} from '@/api/system/roles';
import waves from '@/directive/waves' // waves directive
import {parseTime, getFormatDate, deepClone} from '@/utils/index';
import {getMenusSelect} from '@/api/system/menu';

const calendarCheckOptions = [
    {key: '-1', display_name: '全部'},
    {key: '1', display_name: '启用'},
    {key: '0', display_name: '禁用'}
];

const calendarCheckKeyValue = calendarCheckOptions.reduce((acc, cur) => {
    acc[cur.key] = cur.display_name
    return acc
}, {})

const defaultRole = {
    role_name: '',
    role_remarks: '',
    is_check: 0,
    menus: [],
    menu_ids: [],
};

export default {
    name: 'UserManagement',
    directives: {waves},
    filters: {
        parseTime: parseTime,
        getFormatDate: getFormatDate,
        statusFilter(status) {
            const statusMap = {
                1: 'success',
                0: 'danger'
            }
            return statusMap[status]
        },
        checkFilter(type) {
            return calendarCheckKeyValue[type] || ''
        }
    },
    data() {
        return {
            is_batch: 0, // 默认不开启批量删除
            list: [],
            listLoading: true,
            layout: 'total, sizes, prev, pager, next, jumper',
            total: 0,
            selectRows: '',
            elementLoadingText: '正在加载...',
            listQuery: {
                page: 1,
                limit: 10,
                search: '',
                is_check: '',
                is_download: 0, // 是否下载：1.是；默认0
            },
            downloadLoading: false,
            calendarCheckOptions,

            // 详情
            dialogType: 'add',
            checkStrictly: false,
            dialogVisible: false,
            role: defaultRole,
            defaultProps: {
                children: '_child',
                label: 'menu_name'
            },
            menus: [],
            // 权限状态
            permission: {
                create: {
                    url: '',
                    status: false,
                },
                update: {
                    url: '',
                    status: false,
                },
                delete: {
                    url: '',
                    status: false,
                },
                change_filed: {
                    url: '',
                    status: false,
                },
            }
        }
    },
    computed: {
        menusData() {
            return this.menus;
        }
    },
    created() {
        // 获取角色列表
        this.getList();
        // 获取菜单列表
        this.getMenusSelect();
        // 验证当前页面的按钮权限
        let apis = [];
        this.permission.create.url = createRole({}, true);
        this.permission.update.url = updateRole({}, true);
        this.permission.delete.url = delRole({}, true);
        this.permission.change_filed.url = changeFiledStatus({}, true);
        apis.push(this.permission.create.url);
        apis.push(this.permission.update.url);
        apis.push(this.permission.delete.url);
        apis.push(this.permission.change_filed.url);
        // 验证权限按钮
        checkButtonPermission(this, apis);
    },
    methods: {
        // 获取菜单列表
        async getMenusSelect() {
            const res = await getMenusSelect();
            this.menus = res.data;
        },
        // 获取角色列表
        async getList(callback) {
            this.listLoading = true;
            const {data, status, msg} = await getListRole(this.listQuery);
            if(this.listQuery.is_download == 1){
                if (callback){
                    callback(data, status, msg);
                }
            }else{
                this.list = data.data;
                this.total = data.total;
                this.listQuery.limit = data.per_page || 10;
            }
            setTimeout(() => {
                this.listLoading = false;
            }, 300);
        },
        checkFilter(val) {
            return calendarCheckKeyValue[val] || '';
        },
        setSelectRows(val) {
            this.selectRows = val;
            this.is_batch = 1;
        },
        handleEdit(row) {
            this.dialogVisible = true;
            this.checkStrictly = true;
            if (row) {
                this.dialogType = 'edit';
                this.role = deepClone(row);
            } else {
                this.dialogType = 'add';
                this.role = Object.assign({}, defaultRole);
            }
            this.$nextTick(() => {
                const menus = this.role.menus;
                this.$refs.tree.setCheckedNodes(this.generateArr(menus));
                // set checked state of a node not affects its father and child nodes
                this.checkStrictly = false;
            });
        },
        handleDelete(row) {
            var ids = '';
            if (row.role_id) {
                ids = row.role_id;
            } else {
                if (this.selectRows.length > 0) {
                    ids = this.selectRows.map((item) => item.role_id).join();
                } else {
                    this.$message('未选中任何行', 'error');
                    return false;
                }
            }
            // 删除流程
            this.$confirm(
                '你确定要删除操作吗？删除之后将无法恢复，请谨慎操作',
                'Warning',
                {
                    confirmButtonText: 'Confirm',
                    cancelButtonText: 'Cancel',
                    type: 'warning'
                })
                .then(async () => {
                    const {status, msg} = await delRole({role_id: ids, 'is_batch' : this.is_batch});

                    switch (status) {
                        case 1:
                            // this.list.splice($index, 1);
                            this.getList();

                            this.$message({
                                type: 'success',
                                message: msg
                            });
                            break;
                        default:
                            this.$message({
                                type: 'error',
                                message: msg
                            });
                            break;
                    }

                })
                .catch(err => {
                    console.error(err);
                })
        },
        handleSizeChange(val) {
            this.listQuery.limit = val;
            this.listQuery.is_download = 0;
            this.getList();
        },
        handleCurrentChange(val) {
            this.listQuery.page = val;
            this.listQuery.is_download = 0;
            this.getList();
        },
        handleFilter() {
            this.listQuery.page = 1;
            this.listQuery.is_download = 0;
            this.getList();
        },
        generateTree(menus, menu_id = 0, checkedKeys) {
            const res = [];
            for (const menu of menus) {
                const menu_id = menu.menu_id;

                // recursive child menus
                if (menu._child) {
                    res.concat(this.generateTree(menu._child, menu_id, checkedKeys));
                }

                if (checkedKeys.includes(menu_id) || (menu._child && menu._child.length >= 1)) {
                    res.push(menu_id);
                }
            }
            return res;
        },
        generateArr(menus) {
            let data = [];
            menus.forEach(menu => {
                data.push(menu);
                if (menu._child) {
                    const temp = this.generateArr(menu._child);
                    if (temp.length > 0) {
                        data = [...data, ...temp];
                    }
                }
            });
            return data;
        },
        async confirmRole() {
            // 当前角色选中的菜单栏目列表
            // this.$refs.tree.getHalfCheckedKeys() 返回选中子节点的父节点的key
            this.role.menu_ids = this.$refs.tree.getCheckedKeys().concat(this.$refs.tree.getHalfCheckedKeys());

            this.$refs['role'].validate(async (valid) => {
                if (valid) {
                    const {msg, status} = this.role.role_id ? await updateRole(this.role) : await createRole(this.role)
                    switch (status) {
                        case 1:
                            this.$message({
                                message: msg,
                                type: 'success'
                            });
                            // 单条数据，同步到列表数据，保证实时效果
                            for (let index = 0; index < this.list.length; index++) {
                                if (this.list[index].role_id === this.role.role_id) {
                                    this.list.splice(index, 1, Object.assign({}, this.role));
                                    break;
                                }
                            }

                            if (this.role.role_id) this.getList();
                            break;
                        default:
                            this.$notify({
                                title: msg,
                                // dangerouslyUseHTMLString: true,
                                type: 'error'
                            });
                            break;
                    }
                    this.dialogVisible = false;
                } else {
                    return false;
                }
            });
        },
        // 状态变更
        async changeStatus(row, value) {
            const {data, msg, status} = await changeFiledStatus({
                'role_id': row.role_id,
                'change_field': 'is_check',
                'change_value': value
            });

            // 设置成功之后，同步到当前列表数据
            if (status == 1) row.is_check = value;
            this.$message({
                message: msg,
                type: status == 1 ? 'success' : 'error',
            });
        },

        formatJson(data, filterVal) {
            return data.map((v) =>
                filterVal.map((j) => {
                    switch (j) {
                        case 'created_time':
                            return parseTime(v[j]);
                            break;
                        case 'is_check':
                            return this.checkFilter(v[j]);
                            break;
                        default:
                            return v[j];
                            break;
                    }
                })
            )
        },
    },
}
</script>
